These tanks are intended for installation and use in accordance with the Standard for the Installation of Oil-Burning
Equipment, NFPA 31, the Flammable and Combustible Liquids Code, NFPA 30, the Automotive and
Marine Service Station Code, NFPA 30A, and the Standard for the Installation and Use of Stationary
Combustion Engines and Gas Turbines, NFPA 37, and the Uniform Fire Code, published by the International
Fire Code Institute.

Tanks covered by these requirements are cylindrical tanks that are fabricated, inspected, and tested for
leakage before shipment from the factory as completely assembled vessels.

These requirements do not apply to tanks covered by the Standard for Welded Steel Tanks for Oil Storage,
API 650, nor tanks intended for use in chemical and petrochemical plants.

This Standard does not cover corrosion protection which may be required by local, state or federal
authorities. Corrosion protection systems installed at the factory on carbon steel underground storage tanks
are covered in UL 1746, External Corrosion Protection System for Steel Underground Storage Tanks.

A product that contains features, characteristics,
components, materials, or systems new or different from those in
use when the Standard was developed, and that involves a risk of
fire, electric shock, or injury to persons, shall be evaluated
using the appropriate additional component and end-product
requirements as determined necessary to mai ntain the level of
safety for the user of the product as originally anticipated by
the intent of this Standard.